Reply #19: Boot to safe mode first. [View All]

[bemildred]

See if the problem shows up then.

You might want to do that first (with the original setup) to see what happens before swapping the video card out anyway, if you haven't yet.

And then do that first when you put a card in a new box.

Then, if it looks OK, you might consider getting drivers etc. to try other video modes.

The absence of white sounds wrong, and relevant, but I don't know how to interpret it. I still think the fault isolation is the thing to do, lets figure out what's broken first, then consider how it's broken. it does suggest something with the palette, of what Roy said about bad cable pins or broke hardware of some sort.